9. Two kg of water is converted into steam by boiling at atmospheric pressure. The volume changes from
2×10-3 m3 to 3.34 m3. The work done by the system is about
(a) – 340 kJ (b) – 170 kJ
(c) 170 kJ (d) 340 kJ
Answer-d
(6)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (126)